{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-33516", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-03-20T16:59:08.891Z", "datePublished": "2026-04-17T19:56:11.990Z", "dateUpdated": "2026-04-20T15:43:53.801Z"}, "containers": {"cna": {"title": "xrdp: Pre-authentication out-of-bounds reads in RDP capability and channel parsers", "problemTypes": [{"descriptions": [{"cweId": "CWE-125", "lang": "en", "description": "CWE-125: Out-of-bounds Read", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "PASSIVE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 7.7, "baseSeverity": "HIGH", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N", "version": "4.0"}}], "references": [{"name": "https://github.com/neutrinolabs/xrdp/security/advisories/GHSA-rvh9-9wm3-28c7", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/neutrinolabs/xrdp/security/advisories/GHSA-rvh9-9wm3-28c7"}, {"name": "https://github.com/neutrinolabs/xrdp/releases/tag/v0.10.6", "tags": ["x_refsource_MISC"], "url": "https://github.com/neutrinolabs/xrdp/releases/tag/v0.10.6"}], "affected": [{"vendor": "neutrinolabs", "product": "xrdp", "versions": [{"version": "< 0.10.6", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-04-17T19:56:11.990Z"}, "descriptions": [{"lang": "en", "value": "xrdp is an open source RDP server. Versions through 0.10.5 contain an out-of-bounds read vulnerability during the RDP capability exchange phase. The issue occurs when memory is accessed before validating the remaining buffer length. A remote, unauthenticated attacker can trigger this vulnerability by sending a specially crafted Confirm Active PDU. Successful exploitation could lead to a denial of service (process crash) or potential disclosure of sensitive information from the process memory. This issue has been fixed in version 0.10.6."}], "source": {"advisory": "GHSA-rvh9-9wm3-28c7", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-04-20T15:42:34.531190Z", "id": "CVE-2026-33516", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-04-20T15:43:53.801Z"}}]}}

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{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,0.10.6)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "xrdp", "source": "cna", "vendor": "neutrinolabs"}, "product": "xrdp", "vendor": "neutrinolabs"}], "analysis": {"en": {"generated_at": "2026-04-18T09:02:56.679759+00:00", "value": {"mitigation_remediation": ["Upgrade neutrinolabs xrdp to version 0.10.6 or later", "If upgrade is not possible, disable the RDP service until a patch is applied", "Restrict RDP access to trusted IP ranges and monitor for suspicious Confirm Active PDU traffic"], "summary": {"action": "Immediate Patch", "impact": "Denial of Service"}, "threat_synthesis": {"affected_systems": "All releases of neutrinolabs xrdp published before version 0.10.6 are affected, including 0.10.5 and earlier.", "description_and_impact": "An out\u2011of\u2011bounds read occurs during the RDP capability exchange before authentication. A remote, unauthenticated attacker can send a crafted Confirm Active PDU that causes xrdp to read memory past a buffer boundary. Successful exploitation may crash the RDP server, causing a denial of service, or expose contents of the server process\u2019s memory.", "risk_and_exploitability": "The vulnerability has a CVSS score of 7.7, indicating a high severity. EPSS data is not available, so the specific exploitation probability is unknown. The issue is not listed in the CISA KEV catalog. Based on the description, the likely attack vector is a remote client connecting to the RDP service and sending a malformed Confirm Active PDU; the attacker does not need authentication."}}}}, "created": "2026-04-17T22:30:29.501785+00:00", "updated": "2026-04-18T09:15:15.963229+00:00", "vendors": ["neutrinolabs", "neutrinolabs$PRODUCT$xrdp"]}